Monthly outlook for St. Johns, MI: average high 61.9°, average low 48.6°. That is 2.9° above the climate normal for October. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 13 October (80.9°), the coolest 27 October (35.2°).
61.9°/48.6°
Average high / low
+2.9°
Above normal
4 / 5
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
64.1°
57.6°
+3.7°
23 October – 1 November
58.2°
54.6°
+2°
2 November – 11 November
at normal
49.9°
—
October records over 66 years
84.9°3 October 2023All-time high
22.1°29 October 1967All-time low
Wed, 1466° / 55°0
66 °
St. Johns, Wednesday, 14 October
Overcast. High 66°, low 55°.
Pressure30.09 inHg
Wind8.9 mph N
Humidity58%
Visibility6.2 mi
Dew point48°
Thu, 1561° / 50°0.93
61 °
St. Johns, Thursday, 15 October
Heavy rain. High 61°, low 50°.
Pressure30.15 inHg
Wind10 mph SE
Humidity58%
Visibility6.2 mi
Dew point46°
Fri, 1662° / 44°0.22
62 °
St. Johns, Friday, 16 October
Rain. High 62°, low 44°.
Pressure29.80 inHg
Wind14.2 mph NW
Humidity74%
Visibility4.0 mi
Dew point46°
Sat, 1754° / 37°0
54 °
St. Johns, Saturday, 17 October
Clear. High 54°, low 37°.
Pressure30.45 inHg
Wind6.1 mph W
Humidity57%
Visibility6.2 mi
Dew point35°
Sun, 1861° / 44°0
61 °
St. Johns, Sunday, 18 October
Clear. High 61°, low 44°.
Pressure30.24 inHg
Wind17.6 mph SW
Humidity48%
Visibility—
Dew point38°
Mon, 1960° / 50°0.01
60 °
St. Johns, Monday, 19 October
Light rain. High 60°, low 50°.
Pressure30.15 inHg
Wind15.3 mph SW
Humidity61%
Visibility—
Dew point45°
Tue, 2063° / 45°0
63 °
St. Johns, Tuesday, 20 October
Overcast. High 63°, low 45°.
Pressure30.33 inHg
Wind7.4 mph E
Humidity58%
Visibility—
Dew point46°
Wed, 2166° / 54°0
66 °
St. Johns, Wednesday, 21 October
Overcast. High 66°, low 54°.
Pressure30.30 inHg
Wind8.9 mph S
Humidity70%
Visibility—
Dew point53°
Thu, 2267° / 60°0.32
67 °
St. Johns, Thursday, 22 October
Rain. High 67°, low 60°.
Pressure30.12 inHg
Wind13.6 mph S
Humidity86%
Visibility—
Dew point56°
Fri, 2375° / 67°0
75 °
St. Johns, Friday, 23 October
Light rain. High 75°, low 67°.
Pressure29.91 inHg
Wind21.4 mph SW
Humidity47%
Visibility—
Dew point53°
Sat, 2459° / 50°0
59 °
St. Johns, Saturday, 24 October
Partly cloudy. High 59°, low 50°.
Pressure30.18 inHg
Wind21.3 mph W
Humidity43%
Visibility—
Dew point35°
Sun, 2557° / 43°0
57 °
St. Johns, Sunday, 25 October
Partly cloudy. High 57°, low 43°.
Pressure30.15 inHg
Wind14.7 mph W
Humidity38%
Visibility—
Dew point30°
Mon, 2650° / 44°0.02
50 °
St. Johns, Monday, 26 October
Light rain. High 50°, low 44°.
Pressure30.03 inHg
Wind17.3 mph NW
Humidity56%
Visibility—
Dew point35°
Tue, 2750° / 35°0
50 °
St. Johns, Tuesday, 27 October
Mostly clear. High 50°, low 35°.
Pressure30.33 inHg
Wind8.3 mph NW
Humidity40%
Visibility—
Dew point24°
Wed, 2858° / 40°0
58 °
St. Johns, Wednesday, 28 October
Partly cloudy. High 58°, low 40°.
Pressure30.15 inHg
Wind12.3 mph S
Humidity42%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2953° / 39°0.05
53 °
St. Johns, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.05 in
Chance of precipitation22%
Record high75° (2024)
Record low22° (1967)
Fri, 3055° / 39°0.07
55 °
St. Johns, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.07 in
Chance of precipitation23%
Record high74° (2024)
Record low27° (1988)
Sat, 3154° / 41°0.11
54 °
St. Johns, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.11 in
Chance of precipitation30%
Record high72° (1974)
Record low24° (1988)
Sun, 0153° / 40°0.13
53 °
St. Johns, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.13 in
Chance of precipitation42%
Record high71° (2016)
Record low24° (2023)
Mon, 0252° / 39°0.15
52 °
St. Johns, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.15 in
Chance of precipitation42%
Record high71° (1961)
Record low24° (2014)
Tue, 0351° / 38°0.07
51 °
St. Johns, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.07 in
Chance of precipitation27%
Record high71° (1987)
Record low22° (1991)
Wed, 0451° / 38°0.07
51 °
St. Johns, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.07 in
Chance of precipitation30%
Record high71° (2015)
Record low19° (1991)
Thu, 0551° / 38°0.13
51 °
St. Johns, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.13 in
Chance of precipitation30%
Record high72° (1978)
Record low19° (1991)
Fri, 0651° / 36°0.09
51 °
St. Johns, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.09 in
Chance of precipitation33%
Record high72° (1975)
Record low24° (1991)
Sat, 0749° / 36°0.06
49 °
St. Johns, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.06 in
Chance of precipitation22%
Record high68° (2020)
Record low22° (1991)
Sun, 0849° / 36°0.04
49 °
St. Johns, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.04 in
Chance of precipitation22%
Record high72° (2020)
Record low18° (1991)
Mon, 0949° / 36°0.08
49 °
St. Johns, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.08 in
Chance of precipitation33%
Record high74° (2020)
Record low20° (2003)
Tue, 1049° / 36°0.1
49 °
St. Johns, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.1 in
Chance of precipitation32%
Record high73° (2020)
Record low18° (2017)
Wed, 1146° / 33°0.11
46 °
St. Johns, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.11 in
Chance of precipitation32%
Record high68° (2020)
Record low19° (2017)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for St. Johns, MI are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in St. Johns, MI since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.